US2720181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Barge trim adjustment for confined fluids
Assignee: N A HARDIN
•
Filing: 1951-03-20
•
Granted: 1955-10-11
•
Expires: 1971-03-20
Abstract
No abstract record available.
Inventors
- 👤 Clarence W Brandon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:56
CPC Classifications
B; B63; B63B; B63B25/00; B63B25/02; B63B25/08; B63B25/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US255599A
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AT24981B
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US1054490A
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US1140250A
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US1358018A
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GB194238A
Cited
US1759644A
Cited
US2363177A
Cited
US2435332A
Cited
US2346505A
Cited
US2408505A
Cited
US2487863A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-10 | 1959-04-11 | 1959-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-10 | 1963-04-11 | 1963-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-10 | 1967-04-11 | 1967-10-11 | $7700.00 | Window Closed / Lapsed |